Identifying tab for book spine



FIG. 1 is a rear elevational view of an identifying tab for book spineshowing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom plan view thereof.

The ornamental design for an identifying tab for book spine, as shownand described.